JPH0629357B2 - ABS resin composition for calendering - Google Patents

Description

TECHNICAL FIELD The present invention relates to an ABS resin composition for calendering.

2. Description of the Related Art Generally, ABS resin has excellent mechanical properties, electrical properties, and chemical resistance, and is used for various purposes. In particular, a sheet-like material has been conventionally produced by an extrusion molding method and an injection molding method. However, the ABS resin sheet-like material is peeled off from the surface of the high temperature roll, that is, the roll separation is poor, so that the ABS resin sheet-like material is formed by a calendering method. It was difficult to manufacture.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, since a calendering method is the most productive method for molding a sheet material, in this field, ABS resin is molded by the calendering method without impairing its characteristics. AB with good moldability
The appearance of S resin compositions has been strongly desired.

The ABS resin generally has a thermal property (heat resistant temperature or heat distortion temperature) under a use condition of 100 to 110 ° C. or higher.
However, in recent years, heat-resistant grades that can withstand temperatures of 100 ° C. or more have been actively developed. For such heat-resistant ABS resin, it is also possible to form a sheet-like product thereof by calendering. Good formability A
The appearance of BS resin compositions has been strongly desired.

Further, in recent years, an ABS resin in which a high molecular compound having a permanent antistatic property is blended with the ABS resin has been developed. Regarding such an antistatic ABS resin,
There has been a strong demand for the appearance of an ABS resin composition having good moldability, which is capable of molding a sheet-like material of this type by calendering.

The present invention has been made in order to meet the above-mentioned demands, and when forming a sheet-like material by a calendering method, good roll separation, and rough surface (roughening)
It is possible to form a smooth surface without any defects, does not cause so-called flow marks and the like to give a poor appearance, and does not change the characteristics of the ABS resin itself. It is an object of the present invention to provide an ABS resin composition capable of producing an excellent heat-resistant grade sheet material.

Means for Solving the Problems The present invention, in order to achieve the above object, 100 parts by weight of ABS resin, 0.1 to 4 parts by weight of metal soap, 0.05 to 3 parts by weight of fatty acid ester, and an average of The gist is an ABS resin composition for calendaring, which comprises 0.05 to 5 parts by weight of a plasticizer having a molecular weight of 1000 or more.

In the above, as the metal soap, one or more of barium, calcium, zinc, magnesium, lead or a salt of stearic acid or lauric acid of cadmium can be used.

The amount of metal soap added is 0.1 to 4 parts by weight, preferably 0.5 to 3 parts by weight, based on 100 parts by weight of ABS resin.

Here, if the addition amount of the metal soap is less than 0.1 parts by weight, the resin composition is not easily separated from the roll, and the resin composition adheres to the high temperature roll, so that it cannot be formed into a sheet.
On the other hand, if the amount of metal soap added exceeds 4 parts by weight, the surface of the sheet becomes rough and the surface becomes rough, the appearance of the sheet becomes poor, and the material cost becomes high, resulting in poor economy.

As the fatty acid ester, lower ester of fatty acid, polyhydric alcohol ester of fatty acid, polyglycol ester of fatty acid and the like can be used. Specific examples of the lower alcohol ester of fatty acid include butyl stearate. Specific examples of the polyhydric alcohol ester of fatty acid include hydrogenated castor oil. Specific examples of the fatty acid glycol ester include ethylene glycol monostearate.

The amount of the fatty acid ester added is 0.05 to 3 parts by weight, preferably 0.5 to 2 parts by weight, based on 100 parts by weight of the ABS resin.

Here, when the amount of the fatty acid ester added is less than 0.05 parts by weight, the roll separation of the resin composition is poor and the resin composition adheres to the high-temperature roll in the same manner as in the case of metal soap. I can't. If the amount of the fatty acid ester added exceeds 3 parts by weight, the surface of the sheet becomes rough and the surface becomes rough, the appearance of the sheet becomes poor, and the material cost becomes high, resulting in poor economy.

Further, as the plasticizer having an average molecular weight of 1,000 or more,
Examples include epoxidized soybean oil, adipic acid-based polyester, phthalic acid-based polyester, and the like. When selecting a plasticizer, it is necessary to select one having a good compatibility with the resin, and the above-mentioned plasticizers are all compatible with an ABS resin. The amount of the plasticizer added is 0.05 to 5 parts by weight, preferably 0.5 to 3 parts by weight, based on 100 parts by weight of the resin.

If the amount of the plasticizer added is less than 0.05 parts by weight, the appearance of the sheet will be poor, and the sheet of the resin composition will be sticky and the roll separation will be poor so that the sheet cannot be formed into a sheet. On the other hand, if the amount of plasticizer added exceeds 5 parts by weight, flow marks and the like are generated on the surface of the sheet, resulting in a poor appearance, and high material costs, resulting in poor economy.

The reason why the plasticizer having an average molecular weight of 1,000 or more is limited is that if it is in this range, bleeding or whitening phenomenon does not occur on the surface of the sheet-shaped molded product.

Further, the ABS resin of the ABS resin composition for calendering of the present invention may be blended with a required amount of a polymer compound having an antistatic property. As a polymer compound having such an antistatic property, for example, Japanese Patent Laid-Open No.
It is preferable to use the polyether ester amide released in 2-265340.

The polymer compound having the antistatic property is (a) an aminocarboxylic acid or lactam having 6 or more carbon atoms, or a salt of a diamine and dicarboxylic acid having 6 or more carbon atoms,
(b) A polyetheresteramide composed of a poly (alkylene oxide) carboxylic acid having a number average molecular weight of 200 to 6000, wherein the polyetherester unit is 95
It is defined as 10 to 10% by weight, and excellent antistatic performance can be maintained for a long period of time.

If the ABS resin of the above ABS resin composition for calendering is blended with a required amount of a polymer compound having antistatic properties, it has good permanent antistatic properties and almost no antistatic effect on the front and back surfaces. Sheets of ABS resin composition having no difference can be produced very economically by the calendar method.

The anionic antistatic agent and the cationic antistatic agent generally used as the antistatic agent for plastics are
Since its molecular weight is relatively small, it is not preferable to add it to the ABS resin, because the antistatic agent bleeds to the surface of the sheet during the sheet molding, and the antistatic property disappears at an early stage.

Example Next, an example of the present invention will be described.

Example 1 Commercially available ABS resin having heat resistance (heat distortion temperature 113
C) 100 parts by weight, as a metallic soap, 0.3 parts by weight of barium stearate and 0.5 parts of calcium stearate.
Part by weight, 0.5 part by weight of ethylene glycol monostearate, 1 part by weight of epoxidized soybean oil (trade name ADEKA SAIZER 0-130, manufactured by ADEKA ARGUS CHEMICAL CO., LTD.) Are mixed, and the mixture is uniformly mixed with a Henschel mixer. After mixing to prepare an ABS resin composition, the resin composition was used in a reverse L-shaped four-roll calender molding apparatus at a roll temperature of 210 ° C. and a thickness of 0.5 mm and a width of 500.
It was formed into a sheet of mm.

As a result, the roll separation of the ABS resin composition was extremely good, and the sheet of the heat-resistant ABS resin composition having a smooth and excellent appearance could be formed without causing the surface to be rough.

When the epoxidized soybean oil was not added, it could be molded into a sheet, but the surface was rough and the appearance was very poor.

Example 2 100 parts by weight of a commercially available antistatic ABS resin (heat distortion temperature of 90 ° C.) blended with a polymer compound having the antistatic property consisting of the polyether ester amide was added with barium stearate 0 as a metal soap. 0.3 parts by weight and 0.6 parts by weight of calcium stearate, and 0.8 parts by weight of ethylene glycol monostearate, 1 part by weight of epoxidized soybean oil (trade name ADEKA SAIZER 0-130, manufactured by ADEKA ARGUS CHEMICAL CO., LTD.). After blending and uniformly blending the blend with a Henschel mixer to prepare an ABS resin composition, this resin composition is subjected to a condition of a roll temperature of 210 ° C. using an inverted L-shaped four-roll calender molding device. Then, it was formed into a sheet having a thickness of 0.5 mm and a width of 500 mm.

As a result, the roll separation of the ABS resin composition was extremely good, and it was possible to form a sheet of the ABS resin composition having a smooth and excellent appearance and permanent antistatic property without causing the surface to be roughened.

When the antistatic performance of the obtained sheet was measured with a Honest meter, the half-life of the electrification voltage was very short, and it was possible to maintain excellent antistatic performance for a long period of time, and to obtain a permanent antistatic property. In addition to the above, there was almost no difference in the antistatic effect between the front surface (the glossy surface, that is, the final roll contact surface) and the back surface of the sheet.

The AB obtained in the first and second embodiments
For S resin composition, tensile strength, Izod impact strength, mechanical properties such as elongation, heat deformation temperature (thermal property), surface specific resistance value (electrical property) are measured, and chemical resistance is tested. As a result, the characteristics were almost the same as the ABS resin itself, and no significant change was observed.

EFFECTS OF THE INVENTION As described above, the ABS resin composition for calendering of the present invention comprises 100 parts by weight of ABS resin and 0.1 parts of metal soap.
~ 4 parts by weight, 0.05 to 3 parts by weight of fatty acid ester,
It is composed of 0.05 to 5 parts by weight of a plasticizer having an average molecular weight of 1000 or more, and when the sheet is formed by a calendering method, the roll is released easily and the surface is not roughened (roughened) and smooth. By the calendering method, the surface can be formed, and the appearance of the sheet-shaped molded product such as bleeding or whitening phenomenon due to so-called flow marks and plasticizer does not occur, and the characteristics of the ABS resin itself are not changed. , Heat-resistant grade AB with excellent appearance
The sheet-like material of the S resin composition can be produced very economically.

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Claims (4)

[Claims] 1. 100 parts by weight of ABS resin and 0.
An ABS resin composition for calendering, which comprises 1 to 4 parts by weight, 0.05 to 3 parts by weight of a fatty acid ester, and 0.05 to 5 parts by weight of a plasticizer having an average molecular weight of 1000 or more. 2. The ABS resin composition for calendering according to claim 1, wherein the metal soap is a salt of barium, calcium, zinc, magnesium, lead or cadmium stearic acid or lauric acid. 3. The ABS resin composition for calendering according to claim 1, wherein the fatty acid ester is a lower alcohol ester of fatty acid, a polyhydric alcohol ester of fatty acid, or a polyglycol ester of fatty acid. 4. The ABS resin composition for calendering according to claim 1, wherein the plasticizer having an average molecular weight of 1,000 or more is epoxidized soybean oil, adipic acid polyester or phthalic acid polyester.